73 Ken K5DNL
--
--- On Wed, 11/11/09, hb9ari hb9...@bluewin.ch wrote:
From: hb9ari hb9...@bluewin.ch
Subject: Re: [Elecraft] JT65A output power variations.
To: Elecraft-forum Elecraft@mailman.qth.net
Date
Hello,
As i use principally JT65A (snice ~ 2years),
i've remarked transmit output power variations
depending where the audio is located in the waterfall,
as i'm not speaking English, it's difficult to explain correctly;
if i'm ~ in the middle of the waterfall (~ 1200Hz)
i get over 3dB in output
hb9ari wrote:
Hello,
As i use principally JT65A (snice ~ 2years),
i've remarked transmit output power variations
depending where the audio is located in the waterfall,
as i'm not speaking English, it's difficult to explain correctly;
if i'm ~ in the middle of the waterfall (~ 1200Hz)
Hi Julian,
Thank you for your fast answer!
A 1st point, as with the FT857, i'm using
USB mode for JT65A. For the filter used,
i ordered a 8 poles 2.8k with my K3,
but i'm not sure if the 5 poles 2.7k original
and always installed as FIL2 is not
selected during TX???; next week-end, when
active at
Hello Rudolf,
I use JT65A all the time with my K3 for 6m EME, and I have always used USB mode
for
it. I have no trouble with the USB setting...I have never even tried the DATA
options. I have the standard 2.7 kHz filter, and set the audio just like I do
for
USB voice. I make sure to have
Hello Lance,
I use the same settings for ALC(also 5 bars in JT65), USB and use
the rear LINE IN. As you are using the original 2.7kHz filter this
seems not be the problem.; BUT i don't use compression and this
can explain that you don't have my output power variation;
i can imagine that 20dB
Since you're using USB, you might want to be sure you have the TX EQ
flat. Or use DATA A, where the EQ doesn't apply.
73,
matt W6NIA
On Wed, 11 Nov 2009 11:28:36 +0100, you wrote:
Hi Julian,
Thank you for your fast answer!
A 1st point, as with the FT857, i'm using
USB mode for JT65A. For the
Hello Matt,
Yes, TX EQ is flat. I've tried to compensates
with TX EQ, but i've all reseted to flat.
Thank you for this indication.
73 QRO de Rudolf
HB9ARI
Matt Zilmer wrote:
Since you're using USB, you might want to be sure you have the TX EQ
flat. Or use DATA A, where the EQ doesn't apply.
I don't understand why anyone would use USB mode to operate a sound card data
mode, and have all the bother of switching the input between the mic socket
and the back panel, when the K3 provides a data mode with EQ flat and
compression off specifically for that purpose.
Surely using a digimode
Julian, G4ILO wrote:
Surely using a digimode set up for SSB with ALC operating and 20dB of
compression is going to cause distortion and splatter? Admittedly, JT65A
isn't PSK31 but even so I would have thought IMD products would occur,
Not all digital modes are equal. PSK31 depends on
Richard Ferch wrote:
However, RTTY and many FSK or MFSK-type modes (including JT65A, I
believe) feature a single constant-amplitude carrier that is stepped
between tones. When there is only a single tone being transmitted at any
time, compression does not cause intermodulation; it
hz bandwidth.
This works for me.
GL 73 Ken K5DNL
--
--- On Wed, 11/11/09, hb9ari hb9...@bluewin.ch wrote:
From: hb9ari hb9...@bluewin.ch
Subject: Re: [Elecraft] JT65A output power variations.
To: Elecraft-forum Elecraft
Julian, G4ILO wrote:
Hmm. As I wrote in my blog a while back (
http://www.g4ilo.com/2009/10/embarrassing-moments-in-ham-radio-1.html ) I
once inadvertently did an experiment that proved the crystal filtering does
not do a perfect job of removing the harmonics of a distorted RTTY signal.
If
transitions.
73,
... Joe, W4TV
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard Ferch
Sent: Wednesday, November 11, 2009 1:58 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] JT65A output
Hi Julian,
I choose USB to be able to use VOX; may be i'm wrong, but
with DATA A, the TX activation is only possible with COM or PTT?
(it's the case for my old FT857)
As i use rarely voice modulation, the front panel I/O receptacles
are free, i don't have the necessity of a TX activation
with
I choose USB to be able to use VOX; may be i'm wrong, but
with DATA A, the TX activation is only possible with COM or PTT?
VOX works in DATA A.
73,
Lyle KK7P
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Subject: Re: [Elecraft] JT65A output power variations.
To: Elecraft-forum Elecraft@mailman.qth.net
Date: Wednesday, November 11, 2009, 9:59 AM
Hello Matt,
Yes, TX EQ is flat. I've tried to compensates
with TX EQ, but i've all reseted to flat.
Thank you for this indication.
73 QRO de
--
--- On Wed, 11/11/09, hb9ari hb9...@bluewin.ch wrote:
From: hb9ari hb9...@bluewin.ch
Subject: Re: [Elecraft] JT65A output power variations.
To: Elecraft-forum Elecraft@mailman.qth.net
Date: Wednesday, November 11, 2009, 9:59 AM
Hello Matt,
Yes, TX EQ is flat. I've tried to compensates
Hi Lyle,
Ok Lyle, one more time a too fast reading
of (very well written!) K3's manual!!!
Have a nice day.
73, Rudolf HB9ARI
K3#1212
Lyle Johnson wrote:
I choose USB to be able to use VOX; may be i'm wrong, but
with DATA A, the TX activation is only possible with COM or PTT?
VOX works
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